My 3 year old son has a cold, stuffy nose and unproductive cough. When i put him in a warm bath we noticed what looked liked veins in a honeycomb pattern all over his arms and legs. It was sort of reddish and his knees were sort of purplish. He seemed normal and it didn't seem to bother him. After the bath it still was there but not as predominant, probably wouldn't have notice it if I didn't see it in the bath.